Add a note to coroutine about when generators are detected.

[unscriptable]

Not sure if this is useful or not. Let me know if you'd like me to reword it or put it elsewhere in the docs.

[coveralls]

Coverage remained the same at 100.0% when pulling a405f3e on unscriptable:patch-2 into 47a5173 on briancavalier:master.

[briancavalier]

Thanks! LGTM

Yeah, I don't think there's a way to detect at runtime reliably cross-platform :(

#163 (and equivalent TS type defs) is probably the best early-detection solution. I need to get back to that.

[briancavalier]

👍

[bergus]

Have a look at https://stackoverflow.com/a/19660350/1048572
It doesn't need to be a generator function (function*), it just needs to be a function that returns a generator.